/**
 * @file      almanac_update.c
 *
 * @brief     Almanac Update service implementation
 *
 * Revised BSD License
 * Copyright Semtech Corporation 2020. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Semtech corporation nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL SEMTECH CORPORATION BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * -----------------------------------------------------------------------------
 * --- DEPENDENCIES ------------------------------------------------------------
 */

#include <stdint.h>   // C99 types
#include <stdbool.h>  // bool type

#include <stddef.h>  //NULL
#include <string.h>  //memcpy

#include "almanac_update.h"
#include "modem_services_common.h"

/*
 * -----------------------------------------------------------------------------
 * --- PRIVATE MACROS-----------------------------------------------------------
 */

/*
 * -----------------------------------------------------------------------------
 * --- PRIVATE CONSTANTS -------------------------------------------------------
 */
#define SERVICE_LR1110_GNSS_CONTEXT_STATUS_LENGTH 9
/*
 * -----------------------------------------------------------------------------
 * --- PRIVATE TYPES -----------------------------------------------------------
 */

/*
 * -----------------------------------------------------------------------------
 * --- PRIVATE VARIABLES -------------------------------------------------------
 */

/*
 * -----------------------------------------------------------------------------
 * --- PRIVATE FUNCTIONS DECLARATION -------------------------------------------
 */

/*
 * -----------------------------------------------------------------------------
 * --- PUBLIC FUNCTIONS DEFINITION ---------------------------------------------
 */

almanac_update_return_code_t almanac_update_create_uplink_payload( const void* lr1110_context, uint8_t payload[8] )
{
    uint8_t local_buff[SERVICE_LR1110_GNSS_CONTEXT_STATUS_LENGTH];
    // ask lr1110 to get gnss context status
    if( smtc_modem_services_lr1110_gnss_get_context_status( lr1110_context, local_buff ) != MODEM_SERVICES_RADIO_OK )
    {
        return ALMANAC_ERROR;
    }

    // Do not take hte first byte from the lr1110 response
    memcpy( payload, &local_buff[1], SERVICE_LR1110_GNSS_CONTEXT_STATUS_LENGTH - 1 );

    return ALMANAC_OK;
}

almanac_update_return_code_t almanac_update_process_downlink_payload( const void* lr1110_context, uint8_t* payload,
                                                                      uint8_t payload_len )
{
    // take buffer received from DAS and push it to lr1110 removing the first 2 bytes (upcount, updelay)
    if( smtc_modem_services_lr1110_gnss_push_dmc_msg( lr1110_context, &payload[2], payload_len - 2 ) !=
        MODEM_SERVICES_RADIO_OK )
    {
        return ALMANAC_ERROR;
    }
    return ALMANAC_OK;
}

/*
 * -----------------------------------------------------------------------------
 * --- PRIVATE FUNCTIONS DEFINITION --------------------------------------------
 */

/* --- EOF ------------------------------------------------------------------ */
